Sensibilidade ao contraste a grades senoidais de freqüências espaciais baixas em crianças
Palavras-chave:
Criança, Percepção visual, Sensibilidade ao contrasteResumo
O objetivo deste trabalho foi determinar a função de sensibilidade ao contraste para freqüências espaciais de 0,25; 0,5; 1,0 e 2,0 ciclos por grau em crianças de 4 a 13 anos. Foram estimados limiares de contraste para 60 participantes (50 crianças e 10 adultos jovens), utilizando o método psicofísico da escolha forçada e nível baixo de luminância. Todos os participantes apresentavam acuidade visual normal e se encontravam livres de doenças oculares identificáveis. Os resultados mostraram que a função de sensibilidade ao contraste de crianças de 4-5, 6-7, 8-9, 10-11 e 12-13 anos melhora significativamente com a idade. Os resultados mostraram ainda que a função de sensibilidade ao contraste de crianças de 12-13 anos é semelhante à de adultos jovens (19-22 anos). Estes resultados sugerem que o desenvolvimento da função de sensibilidade ao contraste para grade senoidal em nível baixo de luminância melhora até os 12-13 anos.
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Copyright (c) 2022 Natanael Antonio dos SANTOS, Valtenice de Cássia Rodrigues de Matos FRANÇA
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